Context

For eastern and northern boundaries (flagu = -1 and flagv = -1) use rim velocity instead of the velocity of the internal domain.

Analysis

If flagu = -1 then iim1 defined as ii + MAX( 0, INT( flagu ) is equal to ii, same thing for flagv = -1, ijm1 defined as ij + MAX( 0, INT( flagv ). pua2d(iim1,ij) used in computing the rim velocity ( pua2d(ii,ij) ) is set to the rim velocity itself.

Fix

Do not use iim1 and ijm1 indices in pua2d and pva2d. Note that those are the right indices for pssh.

Context

NEMO writes a lot of text diagnostics (some of the files are useful only for debugging). It looks that those diagnostics are responsible for NEMO performance degradation during RAID check observed at the MetOffice?. Tests with GO8 (based on NEMO4) showed that limiting amount of text data written during model run improves model performance during RAID check; see: ​http://forge.ipsl.jussieu.fr/nemo/attachment/wiki/user/andmirek/NEMO_IO_DIAGN.pdf

Proposal

This development will introduce different output levels for NEMO (0 - 4). For full diagnostics output (3) all data written currently by NEMO will be included. The amount of data written will decrease with decreasing output level. Old level 1 will correspond to new level 4.

Context

the model does not compile with gcc... :-(

Analysis

• some variables are undefined :

src/OCE/TDE/tide_mod.F90
-   USE phycst, ONLY : rpi     ! pi
+   USE phycst, ONLY : rpi, rad, rday

src/OCE/ISF/isfcav.F90
-   USE phycst   , ONLY: grav,rau0,r1_rau0_rcp  ! physical constants
+   USE phycst   , ONLY: grav,rau0,rau0_rcp, r1_rau0_rcp

src/OCE/ISF/isfcpl.F90
+   USE domngb  , ONLY: dom_ngb          ! find the closest grid point from a given lon/lat position

• one format is not accepted:

src/OCE/SBC/sbcblk.F90
-               IF (lwp) WRITE(numout,'("   Mean humidity value found on proc #",i5.5," is: ",f)') narea, ztmp
+               IF (lwp) WRITE(numout,'("   Mean humidity value found on proc #",i6.6," is: ",f10.5)') narea, ztmp

Sorry, I cannot access a ssh connexion. could you please do these commits?

Recommendation

==> we must also use gcc in our sette tests... at least for compilation...